CN107252889B - A kind of preparation method of titanium alloy large-sized casting ingot consutrode - Google Patents
A kind of preparation method of titanium alloy large-sized casting ingot consutrode Download PDFInfo
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- CN107252889B CN107252889B CN201710395368.6A CN201710395368A CN107252889B CN 107252889 B CN107252889 B CN 107252889B CN 201710395368 A CN201710395368 A CN 201710395368A CN 107252889 B CN107252889 B CN 107252889B
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- consutrode
- titanium alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/20—Arc remelting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
- C22C1/0458—Alloys based on titanium, zirconium or hafnium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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Abstract
The invention discloses a kind of preparation methods of titanium alloy large-sized casting ingot consutrode, using mold cavity, auxiliary stand are placed in mold cavity, mold cavity inner space is divided into N number of lattice by auxiliary stand to be kept off；Titanium sponge, commercial-purity aluminium, intermediate alloy are raw material, carry out dispensing, weighing according to the nominal composition of titanium alloy to be prepared, and obtained mixed raw material is poured into respectively in N number of lattice gear；Auxiliary stand is taken out from mold cavity；Mixed raw material in mold cavity is disposably pressed by big substance electrode block using the vertical compacting of short stroke；Step 1 is repeated to step 3, obtains multiple big substance electrode blocks, and be consutrode by obtained multiple big substance electrode block group welderings；The present invention reduces the solder joint of follow-up consutrode, reduce the problem of occurring to lead to fall bullet because of failure welding in fusion process.
Description
【Technical field】
The invention belongs to titanium alloy smelting technical fields, and in particular to a kind of preparation of titanium alloy large-sized casting ingot consutrode
Method.
【Background technology】
Vacuum consumable smelting is a kind of titanium or titanium alloy commonly method of smelting.According to the spy of vacuum consumable smelting technique
Point, alloy raw material under the action of heavy current, are fusing into crucible, solution is from bottom to top in crystallizer section by section as consutrode
Ingot casting is continuously condensed into (crucible).When liquid metal in the form of molten drop by arc zone into crystallizer transition, holding,
In process of setting, a series of physical chemistry side occurs and answers, metal is made to be refined, reaches purification metal, improve crystalline texture, carry
High performance purpose.Vacuum consumable smelting is easy to operate, and the uniform large-scale casting ingot of ingredient can be obtained by repeated revert-melt.
The necessary previously prepared consutrode of vacuum consumable smelting, consutrode is in low-voltage, the direct current camber of high current
It is rapid to melt and solidified in water cooling Cu crystallizer under temperature effect.Consutrode will meet the characteristics of fusion process, molten at other
In the case of sweetening process parameter is metastable, distributing mode directly influences the uniformity of ingot casting ingredient, that is, must assure that electricity
The ingredient uniformity of pole cross section.
The compacting of single-piece electrode can be divided into vertical pressure and horizontal pressure.The length direction of group postwelding consutrode is consistent with pressing direction
It is vertical pressure, is horizontal pressure if vertical.It, can be according to the suitable pressure of size selection of the ability and electrode block of press in production practices
Mode processed.The electrode block of smaller substance is then pressed using vertical frequently with horizontal pressure, larger substance.
2-3 tons of large-scale casting ingot is prepared, the weight of single electrode block is more than 100Kg.If directly disposable compacting, batch mixing
Inhomogeneities increase, i.e. the uniformity of cloth is difficult to guarantee.Electrode block volume is larger simultaneously, and pressed density is unequal.Central part
Position is not delivered to due to press power, more loosely, easily occurs chip off-falling in fusion process, causes that material structure is uneven, segregation
The defects of.Therefore, the electrode block of large-scale casting ingot is suppressed, the method for organizing weldering frequently with piecemeal.The shortcomings that operating in this way be solder joint compared with
More, if weld failure, there are the risks for falling bullet in fusion process.It is relatively low to work at the same time efficiency, when especially substance is larger, asks
Topic is more prominent.
【Invention content】
The object of the present invention is to provide a kind of preparation methods of titanium alloy large-sized casting ingot consutrode, to reduce follow-up consumable
The solder joint of electrode reduces the problem of occurring to lead to fall bullet because of failure welding in fusion process.
The present invention uses following technical scheme, a kind of preparation method of titanium alloy large-sized casting ingot consutrode, the preparation side
Mold cavity is used in method, auxiliary stand is placed in mold cavity, auxiliary stand is for mold cavity inner space to be divided into
N number of lattice of horizontal arrangement are kept off, and wherein N >=2 are positive integer, specifically use following steps：
Step 1, using 0 grade or 1 grade of titanium sponge, commercial-purity aluminium, intermediate alloy as raw material, according to the name of titanium alloy to be prepared
Ingredient carries out n times dispensing, weighing, and obtained mixed raw material is poured into respectively in N number of lattice gear；
Step 2 takes out auxiliary stand from mold cavity；
Mixed raw material in mold cavity is disposably pressed into big substance electrode by step 3 using the vertical compacting of short stroke
Block；
Step 4 repeats step 1 to step 3, obtains multiple big substance electrode blocks, and the multiple big substances that will be obtained
The weldering of electrode block group is consutrode.
Further, auxiliary stand includes the multiple vertical and setting that intersects support plates, and the material of each support plate is
Pure titanium or Titanium alloy Ti-6Al-4V.
Further, auxiliary stand includes the barrel-shaped partition board of both ends open, alternate on barrel-shaped bulkhead sides outer wall to be provided with
Multiple support plates, each support plate be vertically to and with the radial direction of barrel-shaped partition board it is consistent.
Further, the vertical section of each support plate of auxiliary stand is：Top is rectangle, and the thickness of lower part gradually subtracts
It is small wedge shaped.
Further, in the electrode block obtained in step 3, the length on pressing direction is less than on vertical pressing direction
Length.
Further, electrode block substance is 100-150Kg in step 3.
Further, press selects 3500T hydraulic presses.
The beneficial effects of the invention are as follows：The present invention is more than 100Kg electrodes by disposably suppressing the preferable substance of uniformity
Block suppresses the method for organizing weldering again compared to piecemeal, improves work efficiency, reduce the solder joint of follow-up consutrode, reduce molten
Occur to lead to fall the risk of bullet because of failure welding during refining, is advantageously implemented the large titanium alloy ingot casting having good uniformity, it is auxiliary
It helps the use of holder that material is divided into several pieces in advance, is conducive to the uniformity of electrode cloth, uniformity is obtained for follow-up melting
Good large-scale casting ingot lays the foundation.
【Description of the drawings】
Fig. 1 is that mold cavity is divided into quarter and support plate along it by cross auxiliary stand in the embodiment of the present invention 1
The structural schematic diagram in length direction section；
Fig. 2 is that mold cavity is divided into six etc. by intermediate round, the external diverging auxiliary stand in the embodiment of the present invention 2
Part and support plate section along its length structural schematic diagram.
Wherein：1. auxiliary stand；2. mold cavity.
【Specific implementation mode】
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The invention discloses a kind of preparation method of titanium alloy large-sized casting ingot consutrode, using there is mould in the preparation method
Have cavity 2, auxiliary stand 1 has been pre-placed in mold cavity 2, auxiliary stand 1 is used to 2 inner space of mold cavity being divided into water
N number of lattice of flat raft cloth are kept off, and wherein N is the positive integer more than or equal to 2, and it is former that the inner space that each lattice are kept off is used to receiving mixing
Material.
In actual use, auxiliary stand 1 is according to the substance of electrode block, the specific requirement of dispensing element, mold cavity 2
The existence conditions such as specification design different structures, divide different lattice gear number amounts, are conducive to the uniformity of electrode cloth, are follow-up
The large-scale casting ingot that melting is had good uniformity lays the foundation.The inner space size of each lattice gear is not required, still, only
Have when the volume that each lattice keep off inner space is identical, the uniformity of the consutrode finally obtained is best.
In addition, auxiliary stand 1 includes the multiple vertical and setting that intersects support plates, in order to adapt to the tooling item of titanium
The material of part, each support plate is selected as pure titanium or Titanium alloy Ti-6Al-4V.As shown in Figure 1, auxiliary stand 1 is from mould for convenience
It is taken out in tool cavity, adhesion material, the section of each support plate of auxiliary stand 1 along its length is designed to wide at the top and narrow at the bottom
The vertical section of plagiohedral, i.e. each support plate of auxiliary stand is：Top is rectangle, thickness is uniform, and the thickness of lower part is gradual
Reduce wedge shaped.
As shown in Fig. 2, auxiliary stand 1 includes the barrel-shaped partition board of both ends open, alternate setting on barrel-shaped bulkhead sides outer wall
It is consistent to and with the radial direction of barrel-shaped partition board vertically to have multiple support plates, each support plate, that is, forms auxiliary stand 1 another
Structure type.
Specifically use following steps：
Step 1, using 0 grade or 1 grade of titanium sponge, commercial-purity aluminium, intermediate alloy as raw material, according to the name of titanium alloy to be prepared
Ingredient carries out n times dispensing, weighing, and obtained mixed raw material is poured into respectively in N number of lattice gear.
Step 2 loosens auxiliary stand 1, in the case of original cloth in not influencing lattice shelves, by auxiliary stand 1 from mold
It is taken out in cavity 2, the method for taking-up can use artificial or machinery, be specifically chosen according to actual conditions.
Step 3 is disposably pressed into big substance by press using the vertical mixed raw material by mold cavity 2 of short stroke
Electrode block, the electrode block substance each suppressed are all higher than or are equal to 100Kg, it is preferred that the electrode block weight each suppressed is 100
~150Kg, press select 3500T hydraulic presses.
The vertical compacting of short stroke refers to that the height that press top mold frame is lifted is small as possible, and the size of vertical pressing direction is electrode
The height of block-shaped minimum dimension, electrode block is less than diameter, i.e. length of the electrode block on vertical pressing direction is less than electrode
Length of the block on vertical vertical pressing direction, is conducive to the uniformity of electrode block compacted density in this way.
Step 4, after the completion of first electrode block is suppressed, repeat step 1 to step 3, obtain multiple big substances electricity
Pole block, and be a consutrode by the weldering of obtained multiple electrodes block group according to actual conditions.In practical application, it is more that weldering can be organized
A consutrode carries out subsequent vacuum consumable smelting successively.
The preparation method of the Φ 380-100Kg consumable smelting electrode blocks of embodiment 1TC20 (Ti-6Al-7Nb) alloy：It is former
0 grade of titanium sponge of material selection, NbTi intermediate alloys, technical pure aluminium shot, name proportioning is according to Ti-6.2%Al-7.0%Nb
(wt%).It is pre-placed cross auxiliary stand in the mold cavity of Φ 380, cavity is divided into quarter.25Kg is pressed respectively
Weight batching, weighing four times, pour into four lattice shelves.It loosens after taking out holder, is disposably pressed into Φ 380-100Kg's
TC20 titanium alloy electrode blocks.The big substance electrode block thickness about 300mm being pressed into.30 electrode blocks are prepared altogether, and group weldering is 4 consumables
Electrode.Subsequently pass through vacuum consumable smelting 3 times, obtains Φ 620-3000Kg ingot castings.
And in the prior art, if desired melting Φ 620-3000Kg ingot castings, generally use are suppressed frequently with piecemeal, are suppressed
Each electrode block be 25Kg, be consutrode by the weldering of the electrode block group of multiple 25Kg, subsequently obtaining Φ by vacuum melting
620-3000Kg ingot castings.For comparing, the shortcomings that operation is that solder joint is more in this way, just has larger probability and welding mistake occurs
Effect.It is relatively low to work at the same time efficiency, problem is more prominent.
The drawing method of the Φ 460-150Kg consumable smelting electrode blocks of embodiment 2TC4 (Ti-6Al-4V) alloy：Former material
Material selects 0 grade or 1 grade of titanium sponge, AlV55 intermediate alloys, technical pure aluminium shot, and name proportioning is according to Ti-6.2%Al-4.2%V
(wt%).Intermediate circle is pre-placed in the mold cavity of Φ 460, cavity is divided into six etc. by external emission shape auxiliary stand
Part.Respectively by the weight batching of 25Kg, weighing six times, pour into six lattice shelves.It loosens after taking out holder, is disposably pressed into Φ
The TC4 titanium alloy electrode blocks of 460-150Kg.The big substance electrode block thickness about 280mm being pressed into.20 electrode blocks, group are prepared altogether
Weldering is 2 consutrodes.Subsequently pass through vacuum consumable smelting 2 times, obtains Φ 620-3000Kg ingot castings.
Binder auxiliary stand 1 can be according to the substance of electrode block, the requirement of raw material and dispensing, the rule of mold cavity 2
The different structure of the condition designs such as lattice, it is not limited to structure type mentioned in the present invention.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention.
Claims (6)
1. a kind of preparation method of titanium alloy large-sized casting ingot consutrode, which is characterized in that use mould type in the preparation method
Chamber (2), the mold cavity (2) is interior to be placed with auxiliary stand (1), and the auxiliary stand (1) is used for mold cavity (2) is internal
Space is divided into N number of lattice gear of horizontal arrangement, and wherein N >=2 are positive integer, specifically use following steps：
Step 1, using 0 grade or 1 grade of titanium sponge, commercial-purity aluminium, intermediate alloy as raw material, according to the nominal composition of titanium alloy to be prepared
N times dispensing, weighing are carried out, and obtained mixed raw material is poured into respectively in N number of lattice gear；
Step 2 takes out the auxiliary stand (1) from mold cavity (2)；
Mixed raw material in mold cavity (2) is disposably pressed into big substance electrode by step 3 using the vertical compacting of short stroke
Block；
Step 4 repeats step 1 to step 3, obtains multiple big substance electrode blocks, and the multiple big substance electrodes that will be obtained
The weldering of block group is consutrode.
2. the preparation method of titanium alloy large-sized casting ingot consutrode as described in claim 1, which is characterized in that the auxiliary branch
Frame (1) includes the multiple vertical and setting that intersects support plates, and the material of each support plate is pure titanium or titanium alloy T i-
6Al-4V。
3. the preparation method of titanium alloy large-sized casting ingot consutrode as described in claim 1, which is characterized in that the auxiliary branch
Frame (1) includes the barrel-shaped partition board of both ends open, alternate on the barrel-shaped bulkhead sides outer wall to be provided with multiple support plates, each described
Support plate be vertically to and with the radial direction of barrel-shaped partition board it is consistent.
4. the preparation method of titanium alloy large-sized casting ingot consutrode as claimed in claim 2 or claim 3, which is characterized in that described auxiliary
The vertical section of each support plate of holder (1) is helped to be：Top is rectangle, and the thickness of lower part be gradually reduced it is wedge shaped.
5. the preparation method of the titanium alloy large-sized casting ingot consutrode as described in claims 1 or 2 or 3, which is characterized in that step
In the electrode block obtained in 3, the length on pressing direction is less than the length on vertical pressing direction.
6. the preparation method of the titanium alloy large-sized casting ingot consutrode as described in claims 1 or 2 or 3, which is characterized in that step
Electrode block substance described in 3 is 100-150Kg.
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| CN112053843B (en) * | 2020-08-17 | 2022-04-29 | 包头韵升强磁材料有限公司 | Forming and mould pressing method for large-size sintered neodymium iron boron blank |
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| JPS60251235A (en) * | 1984-05-29 | 1985-12-11 | Toho Titanium Co Ltd | Consumable electrode for refining nb-ti alloy |
| JPS619529A (en) * | 1984-06-22 | 1986-01-17 | Toho Titanium Co Ltd | Consuming electrode for melting nb and ti alloy |
| CN101033512A (en) * | 2006-03-07 | 2007-09-12 | 西安赛特金属材料开发有限公司 | Method of producing electrode for titanium alloy vacuum consumable smelting directly added with high melting metal |
| CN101476050B (en) * | 2008-11-21 | 2010-06-16 | 宝鸡钛业股份有限公司 | Preparation of Ti-6Al-4V titanium alloy large-sized casting ingot |
| CN101597705A (en) * | 2009-05-26 | 2009-12-09 | 宝鸡钛业股份有限公司 | The production method of the above big specification zirconium ingot of a kind of Ф 600mm |
| CN101994015A (en) * | 2009-08-27 | 2011-03-30 | 宝鸡力兴钛业有限公司 | Fusion casting method of large-size high-performance titanium and titanium alloy ingot |
| US20110064599A1 (en) * | 2009-09-15 | 2011-03-17 | United Technologies Corporation | Direct extrusion of shapes with l12 aluminum alloys |
| CN103215459B (en) * | 2013-04-27 | 2015-08-12 | 西安赛特金属材料开发有限公司 | A kind of preparation method of low-carbon (LC) hypoxemia Ti-Ni alloy large-sized casting ingot |
| CN105018741A (en) * | 2015-07-31 | 2015-11-04 | 西安西工大超晶科技发展有限责任公司 | Method for preparing homogenized Ti2AlNb alloy cast ingot |
| CN105057661B (en) * | 2015-08-28 | 2017-03-22 | 西北有色金属研究院 | Preparation method for high-Ta-content Ti-Ta alloy consumable electrode |
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